CAS Driver – Serial – CAS-2700-03 – Veeder TCP Gateway


Veeder TCP – TLS 300, 350, 450

Modbus (RTU and TCP) and BACnet and HTML






The Veeder TCP Driver allows the Gateway to poll Veeder TLS Panel’s for status, real time and configuration data. Thus the driver can be used to read Tank Inventory, System Status, Tank Alarms, Sensor Alarms and more .


The Veeder Gateway serves data from a TLS panel as Modbus, BACnet or Web data.  The gateway supports all these options simultaneously. Use the data you want and ignore the other.


The Gateway connects to the TLS Panel, reads data and stores it internally. When a remote system requests data, this data is served in a form that is appropriate to the protocol.  In the event that the connection to the TLS Panel is lost, or data cannot be read, the gateway can signal this to the remote data client.


The gateway requires minimal configuration and can be considered a plug and play component of a system, in that it is ready to operate out of the box with the default configuration.


The driver is a TCP driver using an Ethernet cable to connect between the Gateway and the TLS Panel. The Panel must have a suitable Ethernet card installed.




  • UL and ULc approved
  • 10/100BaseT with RJ-45 connector
  • 1x RS232 Port
  • 1x RS485 Port (Different Models have additional ports)
  • 2MBytes flash memory, 8MBytes of SDRAM
  • Power: 5-24VDC
  • Operating Temperature: 0 to 70 C
  • Dimensions: 4.2″ x 3.25″ x 1″
  • LEDs: Link, Speed/Data, Power



Max Nodes Supported

Gateway Mode Nodes Comments
Client 1 Only 1 TLS Panel per connection
Server 0 Not supported or documented.


Connection Information – Port 1: Veeder Port


 Connection type: TCP via Ethernet Cable
 IP Address: IP of the Veeder TLS Panel
 Port: 10001 (Configurable)



Connection Information – Port 2: Modbus RTU Server Port


 Connection type: RS485 (Jumper change to RS232)
Baud Rates: 9600; 19200 Baud
Data Bits: 8
Stop Bits: 1
Parity: None
Hardware interface: N/A
Multidrop Capability Yes


Devices tested

Device Tested (FACTORY, SITE)
Veeder TLS 300 Tested
Veeder TLS 350 Tested
Veeder TLS 350 Plus Tested
Veeder TLS 450 Tested





Connection Configuration




Driver Operation


The driver can be configured to execute any of the commands in the ‘supported function’ list. The data sent is stored internally in the Gateway and is made available to other protocols (Modbus RTU, Modbus TCP, BACnet IP and HTML) .


The frequency with each data point is read is configurable. The driver retries on errors or timeouts. If the data cannot be read then after some configurable time it is marked as out of service.


The driver reports operating stats and issues on a web page, maintains a log that can be uploaded by HTTP or ftp.




Via Web Page. Configure IP settings, Node ID’s, Baud Rate and other parameters.


Users are able to select

Up to 10 Tanks – specify the number and name of each

Up to 10 Sensors – specify the number and name of each

Up to 1 Vacuum Sensor – specify the number and name of each


The names are used to form the names of the BACnet objects and populate the web page showing current values.


Use can specify

ModbusTCP: Node_ID

ModbusRTU: Node_ID, baud, parity, data lengh, stop nits

BACnet: Device instance number, device name.


Communications functions


Supported functions.

Not all Veeder communication functions are supported. The following functions are supported by the Web based configuration. Additional functions are supported but must be configured manually.




System Status Report


In-Tank Inventory Report


In-Tank Delivery Report


In-Tank Leak Detect Report


Vacuum Sensor Report


The driver will not send the next command until a response has been received from the previous or until a timeout has expired.



This driver was developed by Chipkin Automation Systems (CAS). CAS are proud to provide support for the driver. For support please callCASat (866) 383-1657.



Revision History



Date Resp Format Driver Ver. Doc.Rev. Comment
14 Sep 2012 ACF 0.00 0 Created
If you liked this post;
  • Please consider subscribing to our RSS feed